Pulp-washing apparatus.



PATPNTPD APR. 16, 1907. w. B. KLEIN. 4

PULP WASHING APPARATUS.

APPLIOATION FILED I'll-13.33. 1906.

L T E E H A S T QXM. fw. C.

PATENTED APR. 16, 1907.

w. B. KLEIN.

PULP WASHING APPARATUS.

APPLICATION FILED fEBJZS. 1906.

2 SHBBTS-SHEBT -2.

QXX A A5. 06.

WILLIAM B. KLEIN, OF CHICAGO, ILLINOIS.

PULP-WASHING APPARAVTUS.

Specification of Letters Patent.

Patented April 16, 1907.

Application filed February 23, 1906. Serial No; 302,345.

To all whom it may concern: Be it known that I, WILLIAM B. KLEIN, a citizen of the United States, residing at Chicage, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in PulpWashing Apparatus, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

My IIIVGIIHOII' relates to apparatus for washing pulp, and particularly such pulp as is employed in filters for beer and other liquids.

The object of the invention is to construct an apparatus of this kind which will permit of the easy insertion of the pulp thereinto' before the washing .operation, that will retain-the pulp in the most suitable condition sition by dotted lines.

for washing during such operation, that will thoroughly cleanse the pulp, that will permit of the convenient removal of the pulp after the washing operation has been completed, and that may be easily and quickly cleansed after such operation has been fin.- ished.

Generally. speaking, the invention may be defined as consisting. of the combinations of elements for the purpose specified embodied in the claims hereto annexed.

Referring to the drawings, Figure 1 represents a side elevation, with parts broken away, showing an apparatus constructed in accordance withmyinvention. Fig. 2 represents an end elevation of such apparatus, the automatic flushing apparatus being removed for clearness of illustration and the door of the tank being indicated in open po- Fi 3 represents a transverse sectional view 0 such apparatus, showing the paddles in outwardly-adjusted position; and Fig. 4 represents a view similar to Fig. 3, showing some of the paddles in in- 1 wardly-adjusted position to facilitate access to the pulp.

Describing the parts by reference characters, -1 represents a tank, which, is in ,cross section, preferably a segment of a circle greater than a semicircle. This tankis pro-;

videdwith heads 2 and a door-3, the upper body of the tank and is hin ed at a convena. ient distance from thetop c said tank,,as at e same unsubm'erged.

which are of similar construction, are each provided with suitable bearings 5 for the reception of the shaft by which the washing-cylinder is rotated. A suitable stufling-box 6, of any preferred construction, is providedon the outside of each head, and supports 7 are provided for said tank.

Within the tank is the rotary washer 8. This washer is preferably cylindrical and comprises heads 9, of iron or similar suitable material, between which extends the screens 10 and 11, said screens forming a suitable perforated cage for retaining the pulp in place. The screen 10, which is the inner screen, is of fine mesh, while the screen 11 is of coarser mesh. This washing-cylinder is provided with a suitable door 12, said door eing also composed of screens of the same.

character as those which constitute the body of the washing-cylinder. Each head 9 is provided with pairs of radially-extending ribs 13, between which are supported paddles 14, said paddles extending longitudinally of the washing-cylinder and being adjustablysuported between said ribs for a purpose to be hereinafter set forth. The cylinder 8 is carried by a hollow shaft or pipe 15, provided with a suitable number of perforations 16. This shaft constitutes means for supplying water to the inside of the cylinder 8 and carries thereon a suitable drive-ge ar 17, by means of which it may be rotated.

'As Will appear from an inspection of the drawings, and particularly Fig. 1, the OOI 1-' tainer is nearly submerged in the liquid 1n the tank, leaving only a small portion of the suflicient to enable the atmosphere to strike the pulp as it is carried above the liquid and cause the loosenin of the same, whereby the pulp may drop into the body of the container and be further subjected to the cleansing action of the liquid. .Only a sufficient area of the container is exposed to the atmosphere to insure this action, which keeps the meshes of the fine Wire-gauze lining open to allow the dirt in the"'wa'ter to -pass through the container into the tankand at the same time "the rapidity of washingthe edge of which constitutes the topof one s de ofthe tank. This door forms a part vof the.

ulp is increased loyreason of the factthat This small portion isit is subjected to the action of the-l: uid

during substantially the whole pe'rio of revolution of the. container. 6 Furthermore,

by placing the fine wire-screen; 10 within the coarserfscreen .11 fthe pulp is-retained I in the container without the liability of any of the same working into the spaces between the two screens, and the container may be readily cleaned by turning a stream of water on the same from the outside.

1o uantity of such pulp has been inserted into t e cylinder 8, the doors will be closed and water will be supplied to the pipe 15 through the valve 18 and. pipe 15*. The water issues with considerable force through the perforations 16 and passes through the screens 10 and 1 1, carrying with it the sediment from the pulp, the screens retaining the ulp in place. The paddles 14, being in t eoutwardly-adjusted position, (shown in Fig. 3,) lift the pulp as the cylinder revolves and keep it in proper osition to let the water pass freely theretiirough. As the cylinder revolves the upper portion thereof is brought above the level of the water in the tank, and being then exposed to the atmosphere the pulp drops from the outer surface of the wire-gauze, as indicated in Fig. 3. With water in the tank the pulp is in a semiliquid condition and nearly fills the cylinder.

,When water is withdrawn from the tank, the

water drains from the' pulp, and the pulp then occupies less space in the cylinder, as indicated in Fig. 4. During each revolution of the cylinder the whole surface thereof is exposed to the atmosphere, and the pulp drops continuously from the fine Wire-gauze lining, thereby kee ing the meshes open to allow the dirt'in t e Water to ass through the cylinder-wallsinto the ta whence it may be removed, whereas if the cylinder were stationary or entirelyzimmersed the would adhere to the entire inner. wall iir lihing and act as a filter to retain the dirt or sediment within itself. When the pulp has been washed, the paddles may be moved inwardly to the position shown in Fig. 4, permitting the pulp in the adjoining compartments to drop into the lowermost compartment and facilitating the removal of the pulp from the washing-cylinder. When the pulp has been removed, I may cleanse water in which the cylinder by directing a stream of Water upon the outside of the screen 11 through a suitable hose. When any sediment too large to flow through the inner screen has been loosened, it may pass out readily by the door 12.

. To facilitate the cleansing'of the pulp, the

it is washed should frequently be entirely changedto reyent subjecting it to soiled or disco ored water. For this purpose I provide my tank with means for automatically removing the contents therefrom when the water supplied thereto has nearly filled the same. In

1 I have shown an embodiment of means whereby this result may be accomplished. 18 designates a valve in the supply-pipe. This valve is preferably of the balanced type and is provided with an operating-lever 19, said lever being connected to the stem of a float 20 in such a manner that when the float is in its lower position within the tank 21 the valve will be open. 22 designates a nick-opening and cleaning valve, preferably of the balanced type, in the outlet-pipe 23, which leads from the bottom of the tank, said valve being provided with an operatinglever 24., connected with the stem of a float 25 by a forked link 25 in such manner that when the float is in any position other than near the upper level of the water in the tank 21 the valve is closed. The tank is provided with a'pair of outlet or overflow openings 26 and 27. 28 denotes an 'outlet-plpe extending from the tank 1 near the top thereof and having its lower end in position to dischargeinto the tank21. 7

With the arrangement of parts asabove described, when the water supplied through 15 reaches the height of the pipe 28 the tank will overflow through said pipe into the tank 21. The areas of the pipes 28, 15, and 23 and of the outlet 26 should be substantially the same area and the area of each of said pipes should be considerably greater than that of the lower outlet 27 When the water reaches the pipe 28, it will overflow through said pipe into the tank 21, and flowing through the tank 21 in excess of the capacity of the outlet 27 it will back up in said tank until it reaches the overflow-outlet 26. As the level rises in he tank 21 the floats 20 and 25 also rise. The former float closes the vave 18 and the latter, near he end of its upward movement, opens the valve 22. The tank 1 will now be quickly emptied through ipe 23, the overflow 26 taking care of tie water emptied through said pipe. When the tank 1 has been emptied the level of the water in 21 gradually falls-until it reaches the outlet 27 The floats 20 and 25 fall with the level of the quick closing of the valve 22. Wit this construction and s. rrangementof parts it will be apparent that as soon as the tanki filled it wil be automatically emptied, with the result that the pulp is not caused torotate for any material length of time in dirty water, thereby greatly facilitating the rapidity and thoroughness of cleansing.

' It will e apparent the etails of construction herein described maybe modified or departed rom more or less without avoiding the spirit of my invontion,'and I do not prowater and open the valve 18 and ermit the pose to be limited to such details except as they may be positively included in the c aims hereto annexed or may be rendered necessary by the prior state of the art.

Having thus described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. A pulp-washing apparatus comprisinga container for the reception of the pulp, said containe having an outer perforated wall and paddles extending longitudinally of said container and adjusable toward and from said wall, substantially as specified.

2. A pulp-washing apparatus com rising a cylindrical body provided with..pe 'orations for the flow of liquid therefrom and a pluraity of paddles extending longitudinally of said body and adjustable toward and from $113 outer shell thereof, substantially as speci- 1e 3. A pulp-washing container comprisinga cylindrical body provided with means for supplying liquid centra 1y thereof and with a plurality of paddles extending longitudinally of said body and radially adjustable therein,

' substantially as specified.

4. In a pulpwashcr, the combination of a perforated shaft, a hollow cylindrical perforated body mounted on said shaft, means for supplying liquid to said shaft, and a plurality of longitudinally-extending paddles in said body, said paddles being of considerably less width than the radius of said cylinder and being radially adjustabl therein, substantially as specified.

5 In a pupwasher, the combination of a shaft, a l-ollow cylindrical perforated body mounted on said shaft, means for supplying liquid to the interior of said body, and a plu-- ra ityof longitudinally-extending paddles in said bod said paddles being of considerably less widt t an the radius of said cylinder and i being radially adjustable therein, substantially as specified.

6. A pulp-w sher comprising a rotatable cylinder having hcads, paddles extending longitudinally of said cylinder and. having their opposite ends adjustably engaging said heads, and a perforated cylindrical wall extending between said heads: substantially as specified. I i

7. A pulp-washer comprising a rotatable cylinder having heads, ribs on said heads'ex-' tending radially thereof, addles extending longitudinally of said cy inder and having their opposite ends slidably fitted between said ribs, and a perforated cylindrical wallextending between said heads, substantially as specified.

-8. In a pulp-washing ap aratus, the combination of an outer tanli having a door therein, a pulp-container within said tank,-

said container comprisinga cylindrical body of erforated material, said body being provi ed with a door of similar material, substantially as specified.

9. In a pulp-washing ap aratus, the combination of an outer tanl; havinga door therein, and a pulp-container rotatably supported within said tank, said container comtank, means for rotating said cylinder,

similar materia in the ta prising a cylindrical body of erforated material, said body being provi ed with a door of similar material, substantially as specified.

10. In a pulp-washing apparatus, the combination of a tank, said tank being provided with a door, a rotatable pulp-container within said tank, said container comprising a casing of perforated material and a door in Sfild.

casing, substantially as specified. 11. In a pulp-washing apparatus, the combination of a tank, said tank being provided with a door extending from the top edge of the same and being hinged a short distance above the bottom thereof, a rotatable pulpcontainer within said tank, said container having heads, an outer casing of perforated ma terial extending between said heads, and a door in said casing, substantially as specified. 12. In an apparatus for Washing pulp and like material, the combination of a tank, a container within said tank for said pulp, means for supplying Water to said tank, and means for automatically emptying said tank when the water reaches a predetermined depth therein, substantially as specified.

13. In an apparatus for washing pulp and like material, the combination of a tank, a

cylinder or container within said tank for said pulp, means for supplying water to saig an means for automatically emptying said tank when the water reaches a predetermined depth therein, substantially as specified.

14. In an apparatus for washing pulp, the combination of a tank, a pulp-container mounted therein, said container'being provided with perforations'for the passa e of liquid therethrough,, means for supp yin liquid to the interior of said container, an means for automatically emptying the tank when the water therein reaches a redetermined depth, substantially as speci ed.

15. In an ap aratus for washing ,pulp, the combination 0 a tank, a perforate supplypipe in said tank, a pulp-container mounte on said pipe, said container being provided with erforations for the passage of liquid there hrough, means for supplying liquid through said pipe to the interior of said container, and 'means for automatically emptying th'etank when the water therein reaches a predetermined depth, substantially as specified. a V

16. In an ,ap aratus for washing pulp and I the combination of a tank, a hollow shaft journaled in said tank, a rotary container on said shaft, a pipe connected to said shaft and having avalve therein, a drainpipe connected with saidtank and having a valve therein, and means for automatica ly closing the former valve and for automatically openin the latter valve when the liquid has reached a predetermined depth, substantially as specified.

17. In an apparatus for was 'ng pulp and d no &

similar material, the combination of a tank, a container in said tank, a pipe extending into said container and having a valve therein, a drain-pi e connected with said tank and having a va ve therein, and means for automatically closing the former valve and for automatically opening the latter valve when the liquid in the-tank has reached a redetermined depth, substantially as'speci ed.

18. 1 In a ulp-washing apparatus, tlze combination of the pulp, a tank wherein said cylinder is mounted for rotation, and'an overflow for I said tank located at a slight distance belowthe upper surface of the cylinder, substantially as specified.

a perforated rotary cylinder for WILLIAM B. KLEIN. I

Witnesses:

W. L. MGGARRELLL I J. B. HULL. 

